The SI unit for the average velocity is

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m / s

km / s

cm / s

mm / s

answer is A.

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Detailed Solution

The SI unit for the average velocity is

m / s

.
By the definition of velocity,

v = \frac{s}{t}

Where,

s =

displacement,

t =

time and

v =

velocity
Since the unit of displacement i.e. length in the SI system is a meter.
Since the unit of time in the SI system is second.
Therefore the unit of velocity is meter per second and average velocity is also velocity therefore its unit is also meter per second i.e.

m / s

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